Device for increasing heat absorption



B. BROIDO DEVICE FOR INCREASING HEAT ABSORPTION Filed March 15, 192? E E1\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\MW I I\\\\\ \N I I\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\i s 1 wuewo'a BENJAMIN BHOIDQ @33 atto'onm a Patented Jan. 6, 19256 unit-an stares 1.52am earanr OFFICE.

BENIAMN BROIDO, OF NEW'YORK, N. Y., ASSIGNOR TO THE SUPEEHELTER OF NEW YORK, N. Y.

DEVICE roamomma nna'r jaasoarrron'.

Application filed mat s, 1922. Serial. Ho. 54am.

To all whom it may concern:

Be it known that I, BENJAMIN Bnomo,

citizen of the United States, and resident quired to make the invention applicable to" any device of this kind is that the individual pipes or other similar heat absorbing element be in a vertical or approximately vertical position.

I am illustrating my invention in corn nection with an economizer placed in a horizontal passage through which the heatinggases pass 1n a generally horizontal ',direction, the economizer comprising a series of vert'cally placed pipes. I

In t e drawing accompanying this specific'ation, Fig. 1 is a more or less diagrammatic side elevation of such an installation illustrating my invention, the near wall of the gas passage being omitted for the sake of clearness; Fig. 2 illustrates on an enlarged scale and partly in section, a portion of, a single heat-transmitting pipe used in the installation; Fig. 3 illustrates on the same scale as that of Fig. 2 one of the rings used in carrying out my invention; and Fig. 4; is a viewsimilar to that of the lower portion of Fig. 3, illustrating a modification:

A current of heating gases passes in the direction shown by the arrows otFig. 1'

through the casing 1, entering at 2 and leaving for the stack at'3. In this casing 1 is placed the economizer 4, made up of a series'of vertically placed pipes 5 conaround the pipes. An objectionable feature of this is' that the heating gases in practi- I cally all cases carry, in sus nsion with them a certain amount of as es, soot and dust, some of which will lodge on these ribs and obstruct the desired heat transfer. ,For 'thls reason I propose to incline the ribs 9* suffi ciently to the vertical to ca-use such deposits to slip ofi'.- Ashes, etc., however, lodged in the upper acute angle between the ribs and the rings will not sh oil, and will form a nucleus of accumulations to which additional matter will adhei'e, gradually covering the entire surface. deposit fromforming in the angle, I do not extend the ribs 9 entirely around the pipes but leave a gap .at 10 on the upper side where these deposits would occur, as shown clearly in Figs. 2 and 3. The finsor ribs are thus omltted only over the comparatively protected, uiescent area at the back side of the pipes on which gases do not To avoid this impinge directly and where heat absorp- .tion is not very effective an way. The loss in heat absorption is there ore' negligible.

The ribs will have the efiect of dlrecting the gas flow somewhat u ward from the horizontal, and it is for thls reason that .the bafiles 11' are introduced in the form illustrated in Fig 1. These baflles will again bring the gases down so that, as they enter the lefi section of the superheater, they are again distributed over the entire area.

It will be evident that some of the details may be varied within the scope of the appended claims. Thus the rings may be of a fairly narrow width and be provided with one rib each, as shown at the top and at the lower part of Fig. 2; or a ring maybe made wide enough to be given several ribs, as in the middle part of this figure, where the unitary wide ring has three ribs. Such and other variations will suggest themselves readily.

In the modification shown in Fig. 4 the rings are shown integral with the pipe, a form of my invention especially adapted to cases where the pipes arecast iron, or other cast material. The. gap 10 in the ribs 9 has here the same efiect 'as in the form first described.

\ It has been mentioned that the invention is useful also in. connection with superheaters. In that case, under somecircumstances, the rings may have the additional purpose'of protecting the pipes against excessive heat, but the action of the fins and their gaps remains as described.

What I claim is:

1. In apparatus of the class described the combination of a substantially vertical pipe, means to direct a current of heating gases against said pipe, a heat absorbing rib on said pipe inclined to the horizontal upward in the direction of gas-flow and extending around the pipe except'on the side toward which the gases flow. 2. In apparatus of the class described the combination of a substantially vertical pipe, means to-direct a substantially horizontal current of heating gases against said pipe, a series of heat absorbing ribs on said pipe inclined to the horizontal upward in the direction of gas-flow, and extending around the pipe except on the side toward which the gases flow.

3. In apparatus of the class described,the combination of a plurality of substantially vertical pipes, means to direct a substantially horizontal current of heating gases against them, a series'of heat absorbing ribs on each pipe inclined to the horizontal upward in the direction of gas-flow, and extending around the pipes except on the side toward which the gases flow.

4. In apparatus of the class described, the combination of a substantially vertical pipe, means to direct a current of heating gases against said pipe, a .heat absorbing ring encircling and closely engaging said pipe, the ring having a rib inclined to the horizontal upward in the direction of gasflow and extending around the pipe except on the side toward which the gases flow.

BENJN BROIJDU. 

